Proposal for symmetric dimers at the Si(100)-2×1 surface
- 22 May 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 62 (21) , 2491-2494
- https://doi.org/10.1103/physrevlett.62.2491
Abstract
Total-energy and core-level-shift calculations in clusters of atoms and a simple model strongly support a symmetric configuration of the dimers at the Si(100)-2×1 surface. The spin arrangement within the dimer is found to be antiferromagnetic lowering the total energy and opening a gap in the surface bands. Different experimental results are examined and found to be fully compatible with this model.Keywords
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